Protected Apps: update protected apps screens UI

Change-Id: I2dd922956f8ffd9ed153c3d1aa1f9161a127e4c6
Remove unnecessary drawables for launching Protected Apps

Change-Id: I58f471ef9d64c7ced79befbfc30b94d75a0085a2
Development Settings: fix Advanced reboot not being updated on resume

Change-Id: I5475bec978c9cf50c02769091dbb43c6eff6c020
bluetooth: Don't crash when the local adapter is not set

In devices where bluetooth is not working (like the emulator or devices
in development), the bluetooth Settings crashes when closing the activity.

Most of the code checks for the nullability of the local adapter except
for this particular piece. This is usually not a worry for production
devices and I wouldn't usually worry about this but since the rest of the
code performs the nullability check it seems silly to crash onPause.

Change-Id: I7c1d3b43969b516336be770957008ef2054d312f